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Biology - Exemplar

16. Digestion and Absorption

1. The Living World
2. Biological Classification
3. Plant Kingdom
4. Animal Kingdom
5. Morphology of Flowering Plants
6. Anatomy of Flowering Plants
7. Structural Organisation in Animals
8. Cell : The Unit of Life
9. Biomolecules
10. Cell Cycle and Cell Division
11. Transport in Plants
12. Mineral Nutrition
13. Photosynthesis in Higher Plants
14. Respiration in Plants
15. Plant Growth and Development
16. Digestion and Absorption
17. Breathing and Exchange of Gases
18. Body Fluids and Circulation
19. Excretory Products and Their Elimination
20. Locomotion and Movement
21. Neural Control and Coordination
22. Chemical Coordination and integration
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Q. 65.0( 2 Votes )

What are three major types of cells found in the gastric glands? Name their secretions.

Class 11th Biology - Exemplar 16. Digestion and Absorption

Answer :

The three major types of cells found in the gastric glands with their secretions are as follows:

i. Mucous Neck cells – they secrete mucus

ii. Peptic or chief cells – they secrete Proenzyme Pepsinogen and Prorennin

iii. Parietal or oxyntic cells – they secrete HCl and intrinsic factor. Intrinsic factor is essential for absorption of vitamin B12.

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PREVIOUSCorrect the statement given below by the right option shown in the bracket against thema. Absorption of amino acids and glycerol takes place in the. (small intestine/ large intestine)b. The faeces in the rectum initiate a reflex causing an urge for its removal. (neural /hormonal)c. Skin and eyes turn yellow in infection. (liver /stomach)d. Rennin is a proteolytic enzyme found in gastric juice in (infants / adults).e. Pancreatic juice and bile are released through. (intestinepancreatic/ hepato- pancreatic duct)f. Dipeptides, disaccharides and glycerides are broken down into simple substances in region of small intestine. (jejunum/ duodenum)NEXTHow is the intestinal mucosa protected from the acidic food entering from stomach?

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